Tholmes



C. W. BARTHOLMES.

DEEP WELL PUMP.

APPLICATION FILED IuNE 30.19I4.

L1 93,752. y Patnted Aug. 8,1916.

i lIIE I rraus DEEP-WELL PUMP.

Specifica-tion of Letters Patent.

Patented Aug. e., wie.

Application led June 30, 1914. Serial N o. 848,197.

To all 'whom t may concern:

Be it known that I, CHARLES W. BAR- THoLMEs, a citizen of the United States, residing at Coalinga, in the county of Fresno and State of California, have invented certain new and useful Improvements in Deep- IVell Pumps, of which the following is a specification.

The object of my invention is to provide 4a sucker rod piston to be made integral with the sucker rod, or as a coupling to be screwed into a sucker rod, which is connected to the plunger or piston of the usual type of pump attached on the lower end of. a string .of pipe in the well.

The object of my invention is to .assist in lifting the oil and sand in the regular process of pumping a well; to eliminate eX- cessive buckling of the sucker rod in pumping due to the prescribed narrow limits between the sucker rod piston cage, r'and the interior diameter of the pipe, :thereby assuring maximum stroke 4of pump plunger;

to insure concentricity of the sucker rods in the event of buckled 'tubing by reason ofthe aforesaid prescribed narrow limits between the'sucker rod piston cage and tubing; to eliminate contacting with ends of tubing between couplings while in operation or when pulling the plunger or main piston for the purpose of renewal or cleaning the well by reason of absence of projecting parts in the correlative members of the device; to provide means for packing in order to obtain closer refinements in relative sizes of the device and interior of pipe, as for example, between joints of threaded union and their corresponding nipples of the upper and lower cage, or by recessing the exterior periphery of the union; and with these and other objects in view my invention consists of the parts and combination of parts as will be more fully hereinafter pointed out.

In the drawings F igure 1 is a vertical sectional view of a pumping well showing the tubing, sucker rods, barrel, valves and anchor, parts beingin elevation; Fig. 2 is an enlarged detail side elevation of my improved integral piston and sucker rod; Fig. 3 is a top plan view of Fig. 2; Fig. 4 is an enlarged detailside elevation showing the piston on a coupling adapted to be screwed to the sucker rod; Fig. 5 is a top plan View of the same.

In Fig. 1 I have shown the relative position of the usual deep well or plunger piston, l(which I in the following will call nia-in piston) to the sucker rods when in the well ,and have incorporated the dash valves in the sucker rod pistons embodying my invention, in the position they would occupy under working conditions, from which it will be seen that my improved dash valves and sucker rod pistons are not 'integral with the main piston, but are ya part of the sucker rod, and coact with the main piston in lifting the fluid.

The main piston occupies a position on the lower end of a string of tubing in the well.

The reference numeral 1 designates the usual tubing which terminates at the lower end in a perforated pipe or anchor 2. rThe main piston "3 is mountedl in the tubing .or working barrel. rIhe complete sucker rod l is made up according to my invention of a series of rod andpiston sections which will now be described in detail.

According to Fig. 2 the sucker rod pistons are formed integral with the sucker rod and consist of an upper cage 5 having lugs 6,

`there being a space 7a for the escape of fluid therebetween. At the bottom of the cage a valve seat 8 is formed in which the ball 7 is adapted to be seated to close the valve as the sucker rod is lifted thereby preventing the return of fluid lifted over the cage on the downward movement of the rod. Depending below the cage is a screw threaded nipple 9, the nipple being tubular and its upper end forming the above described valve seat. The lower cage 10 is made in accordance with the description of the cage 5 with the exception that there is no ball therein. These two sections of the sucker rod are securely coupled together by means of the screw threaded union 11 which has a screw threaded engagement with the nipples of the upper and lower cage as shown, the union with the two nipples forming the actual sucker rod piston. There are a series of these cages or sucker pistons extending throughout the length of the sucker rod as more clearly shown in Fig. 1.

As shown in Fig. 4 I may construct each sucker rod piston as a coupling, whereas the construction is like that described in connection with Fig. 2, the only difference being that on the upper end of the coupling I form a screw threaded socket 12 into which one end of a section of a sucker rod proper is screwed, while on the other end I form a male screw threaded member 13 which is adapted to be screwed into a screw threaded socket of another section of the sucker rod.

p It is my intention to place these sucker pistons with their dash valves at intervals on the sucker rod either integral with it or arranged on a coupling to be screwed into couplings of the sucker rod as above described. The suckerv rod pistons, in inceptive order will be above the main piston at the lower end of the sucker rod and will eX- tend to the height of the rods.

In operation the main piston is the impellent in moving the fluid while the sucker rod pistons are in reality buckets, and the ball within the top cage is for the purpose of effecting a closure to prevent the early action of the fluid on the upward stroke of the main and sucker pistons. The ball is raised on the downward stroke of the piston, thereby permitting the How of liquid through the valve and thence through the openings in the upper cage.

I claim l. A piston for deep well pumps comprising a pair of oppositely positioned cage members, a union for rigidly connecting said members, a ball in the cage, said union being tubular in order to form a seat for the ball and together with it constituting a dash valve. s. 2. In a deep well pumping apparatus, the

combination with a sucker rod made in sec= tions, of a piston member including a valve formed on one section, a screw threaded nipple extending from said section, a piston member formed on the end of another section, a screw threaded nipple extending from said member, and a union having a screw threaded engagement with said nipples to couple the said piston members in intimate working relation whereby said sucker rod carries a series of pistons on it throughout its length, said union forming a seat for said Valve and permitting fluid communication through the two adjoining l pistons.

3. In a deep well pump having a main valve and a rod therefor; said rod comprising a plurality of pistons, each piston including a pair of oppositely positioned cage shaped members, a tubular union rigidly connecting said members and a ball within the cage portion, the end of said union forming a seat for said ball and constituting therewith a dash valve. v

The foregoing specification signed at Coalinga, California, this ninth day of June, 1914.

CHARLES W. BARTHOLMES.

In presence of- CHARLES R. COLE, J. M. CLARKE.

Copies of this patent may be obtained for ve cents each, by addressing) the Commissioner of Patents,

Washington, D. Ci. 

